Nutrition
15th Edition
ISBN: 9781337906371
Author: Sizer, Frances Sienkiewicz., WHITNEY, Ellie
Publisher: Cengage Learning,
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Textbook Question
Chapter 15, Problem 12SC
Which of the following is a threat to the future food supply?
- fossil fuel use
- water shortages
- ocean pollution
- all of the above
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Which of the following represents a grazing food chain?a. leaves → detritus feeders → deer → owlsb. birds → mice → snakesc. nuts → leaf-eating insects → chipmunks → hawksd. leaves → leaf-eating insects → mice → snakes
Which of the following is an environmental factor that leads to food insecurity?
a) Poverty
b) Climate change
c) War and conflict
d) Agricultural practices
Which one of the following sentences is NOT true?
Select one:
Compared with other land-based food production systems, fisheries and aquaculture have a relatively small overall carbon footprint.
Global fish production from capture and culture operations contributed up to 1.5% to the world’s CO2 emissions.
CO2 emissions by marine and inland fishing vessels were about 0.5% of the total global emissions.
Being a minor contributor in global terms, fisheries and aquaculture have no opportunities to mitigate emissions of greenhouse gases.
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- The loss of an apex consumer would impact which trophic level of a food web? primary producers primary consumers secondary consumers all of the abovearrow_forwardWhich one of the following is not a food chain? Squirrel ➞ nuts ➞ hawk Leaves ➞ caterpillar ➞ bird Grass ➞ cows ➞ humans Grass ➞ antelope ➞ tigerarrow_forwardmake a prediction about the effects that future human population growth will have on the following:Food productionAvailable water supplySpreading of diseaseNatural resourcesEnergy demandsGlobal warmingarrow_forward
- The Venus flytrap is a photosynthetic plant that can trap and eat small carnivorous insects. The Venus flytrap is a: Group of answer choices both a producer and tertiary consumer. tertiary consumer. both a producer and secondary consumer. producer. secondary consumer.arrow_forwardWhich organism represents the secondary consumer? Which organism represents the producer? Zooplankton Anchovy Salon Sea lionarrow_forwardWhich of these characteristics are true for consumers? They occupy the first level of a food web. They provide food for all other organisms. They make carbon dioxide available to plants. They can synthesize their own food.arrow_forward
- What role is a wolf playing when it eats a rabbit that eats grass on a prairie in Wisconsin? Group of answer choices tertiary consumer detritivore secondary consumer primary consumer producerarrow_forwardWhich of the following ultimately feeds at every trophic level? Producer Primary consumer Secondary consumer Tertiary consumer Decomposers/Detritivoresarrow_forwardMost years, severe cold temperatures destroy a large number of grasshopper eggs. During one particular year, however, a mild winter allowed the grasshopper population to increase. This resulted in a well-fed frog and toad population as well as plenty of food for insectivorous snakes and birds. Unfortunately, the increased number of grasshoppers caused a higher percentage of crop damage due to insects. Which of the following best summarizes the food chain described in the paragraph above? crop --> grasshoppers --> snakes or birds crop --> grasshoppers --> snakes --> birds crop --> birds --> snakes crop --> grasshoppers --> toads --> birdsarrow_forward
- This trophic level is the apex predator Quaternary consumer Primary consumer Primary producer Tertiary consumerarrow_forwardThis trophic level includes the herbivores primary producer tertiary consumer secondary consumer primary consumerarrow_forwardWhich of the following statements about the phosphorus cycle is correct? a. Phosphorus is fixed by plants and algae. b. Most phosphorus released from rocks is carried to the oceans by rivers. c. Animals cannot get their phosphorus from eating plants and algae. d. Fertilizer use has not affected the global phosphorus budget.arrow_forward
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